<p>Some free physics textbooks:</p>
<p>[Light</a> and Matter: open-source physics textbooks](<a href=“http://www.lightandmatter.com/]Light”>http://www.lightandmatter.com/)
[Welcome</a> to Physics for Free](<a href=“http://www.physicsforfree.com/]Welcome”>http://www.physicsforfree.com/)
[The</a> Physics Hypertextbook](<a href=“http://physics.info/]The”>http://physics.info/)
[Calculus-Based</a> Physics](<a href=“Homepage | Saint Anselm College”>Homepage | Saint Anselm College)</p>